1728969742 has 8 divisors (see below), whose sum is σ = 2618634096. Its totient is φ = 856091712.

The previous prime is 1728969719. The next prime is 1728969761. The reversal of 1728969742 is 2479698271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196323 + ... + 4196734.

It is an arithmetic number, because the mean of its divisors is an integer number (327329262).

Almost surely, 2^1728969742 is an apocalyptic number.

1728969742 is a deficient number, since it is larger than the sum of its proper divisors (889664354).

1728969742 is a wasteful number, since it uses less digits than its factorization.

1728969742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8393162.

The product of its digits is 3048192, while the sum is 55.

The square root of 1728969742 is about 41580.8819290789. The cubic root of 1728969742 is about 1200.2244353362.

The spelling of 1728969742 in words is "one billion, seven hundred twenty-eight million, nine hundred sixty-nine thousand, seven hundred forty-two".